1. Department of Environmental Health and
2. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA
3. Channing Laboratory, Department of Medicine, Harvard Medical School and Brigham and Women’s Hospital, Boston, Massachusetts, USA
4. Rush University Institute for Healthy Aging, Rush University Medical Center, Chicago, Illinois, USA
5. School of Health Sciences, Purdue University, West Lafayette, Indiana, USA
6. Department of Neurology, Boston University Medical Center, Boston, Massachusetts, USA
7. Department of Neurology, Brigham and Women’s Hospital, Boston, Massachusetts, USA
8. Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
9. Harvard Vanguard Medical Associates, Boston, Massachusetts, USA
10. Department of Pediatrics, Harvard Medical School, Children’s Hospital, Boston, Massachusetts, USA
11. Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan, USA